【摘要】 通过试验对驱动电机单元进行了振动特性分析,评价了电机3个悬置的隔振性能;并在机械系统动力学分析软件(ADAMS)中建立驱动电机与副车架耦合动力学模型,分别计算了刚性副车架和柔性副车架悬置系统的模态,对比分析得出副车架柔性化后降低了悬置系统的模态频率。以电机振动的主要激励频率为输入,以传递到车身力最小为目标函数,对悬置的刚度阻尼参数进行了优化分析,优化后的悬置的隔振性能得到了改善,达到隔振的目的。更多还原

【Abstract】 Through a vibration experiment the vibration characteristics of a driving motor unit is analyzed and the performance of vibration isolation of three mounts are estimated.The driving motor and subframe coupling dynamic model is established in ADAMS.The mode of mount system with rigid subframe and flexible frame are calculated.The results show that the mode frequency of mount system is reduced if the subframe is elastic.In the end,the motor’s main vibration frequency and the minimum of force on the vehicle body transfered from motor’s vibration are chosed as the input and target function respectively.The optimization analysis is made on mount’s parameters,and the performance of mount’s vibration isolation is improved.更多还原